Process of manufacturing tubes of paper.



No. 747,332. j PATENTED DEC. 15, 1903.

G; H. SAGHSENRUDER. V PROCESS OF MANUFACTURING TUBES OF PAPER.

APPLIQATIOKPIIED' AUG. 5I 1903.

N0 MODEL.

z/zlizes ey zzverzior:

UNITED STATES Patented December 15, 1903.

.PATENT OFFICE.

PROCESS OF MANUFACTURING TUB-ES OF PAPER.

ZSPECIFICATION forming part of Letters Patent No. 747,332, datedDecember 15, 1903.

Original application filed -l'anuary '7, 1903, Serial No. 138,152.Divided and this application filed August 5, 1903. Serial No. 168,352.(No model.)

22) all whom it may concern:

Be it known thatI, GUSTAV HEINRICH SACH- SENR6DER, a subject of theEmperor of Germany, residing at Barmen-Unterbarmen, in the Kingdom ofPrussia and Empire of Germany, have invented new and useful Improvementsin Processes orMethods of Manufacturing Tubes of Paper with Linings orCovers, of which the following is a specification.

This invention relates to a process of producing tubes by bendingtogether the edges of a strip or width of paper or suitable material andproviding the same during the formation with a lining or covering tostrengthen the tube and add to its appearance.

According to this invention a strip of paper or material of suitablelength and width is passed through an adhesive liquid and united bypressure to another strip of material intended for the lining. Thecompound strip so produced is then bent to form a tube in such a waythat the lining comes inside and the edges of the strip overlap to thedesired extent to form a joint. The overlapping edges are then pressedtogether, and after thorough drying the tube so obtained is out todesired lengths. By simultaneously applying a strip on each side of thefoundation or intermediate strip after passing through the adhesivesolution one of the strips will form a lining and another a cover forthe intermediate tube or body-strip or for the tube formed in the mannerdescribed.

In the drawings, Figure 1 represents diagrammatically in side elevationan arrange ment adapted to carry the invention into effect. Fig. 2 is aside elevation of a modification of the arrangement for applyingsimultaneously a lining and an outer envelop. Figs. 3, 4, and 5 show thetube-formers detached. Fig. 6 is a section of a formed but unclosed tubehaving a lining. Fig. 7 is a section of a formed but unclosed tubeprovided with a lining and an outer envelop.

The strip of paper from which the lined or enveloped tube is to beformed is conveniently drawn from a roll a, thence through a trough b,containing adhesive liquid. A guide or dip roller 0, under which thestrip passes, is mounted in the trough. Doctors brushes or the likedevices are provided to remove the superfluous liquid as it leaves thetrough, whence it passes between pressing-rollers (if. Along with thestrip from the roll a, the lining-strip from the roll 9 passes betweenthe pressing-rollers. Sufiicient pressure or nip is applied by thepressing-rollers to firmly unite the two separate strips into a singlecompound strip 8, which traveling in the di rection of the arrows goesthrough an oval guide or former I, where the edges are turned up, thenthrough the former II, which more nearly approaching the form of acircle bends the edges closer together. The strip then goes through theformer III, which causes the edges to overlap. Figs. 3, 4, and 5 showthe formers in front elevation. The strip 8 has, now been bent to theshape shown in cross-section in Fig. 6, in which state it goes through apair of pressing-rollers i m, where sufficient pressure is applied tounite the overlapping edges. As the tube leaves the pressrollers 't' mit is cut into convenient lengths.

To produce a tube with a lining and an outer envelop, the latter, asshown in Fig. 2, is drawn upward from the roll g and passes between thepressing-rollers, under the strip coming from the roll a, through theadhesive liquid. At the same time the strip to form the lining comesfrom the roll g. A triple compound strip sis thus produced,from whichthe tube is formed and. treated in the manner already described.

In the case of a tube havinga liningand an envelop the edges of therespective strips are set in such a relation to each other (see Fig. 7)that the adhesive material at the edges 0. effects the union of theoverlapping portions.

Should it be desired not to. press thetubes flat in the press-rollers 2771,, but to preserve them in a perfectly-round form when they leave thepress-rollers i m, the strip .9 is led over a round mandrel extendingfrom the former I, through the formers II and III, and into thepressing-rollers 't' m. The flattened tubes may, however, be transformedinto round ones by the application of internal pressure.

By the choice of suitable lining or enveloping fabrics tubes possessinga considerable power of resistance to liquid or gas pressure may beobtained.

What I claim as new, and desire to secure by Letters Patent, is

A method of manufacturing tubes from a plurality of strips of suitablematerial, consisting in passing one of the strips through an adhesivesubstance for coating it, removing the surplus adhesive material,uniting the other strip to said coated strip, bending the united stripslongitudinally in asubstantially oval-shaped manner, then bending saidovalshaped united strips to a substantially cylindrical shape therebybringing the longitudinal edges of said united strips closer together,

GUSTAV HEINRICH SAGHSENRUDER.

Witnesses:

O'rro KONIG, J. A. RITTERSHAUS.

